Delivery device having encapsulated excipients
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United States of America Patent
Stats
-
Dec 16, 1997
Grant Date -
N/A
app pub date -
May 11, 1995
filing date -
Nov 20, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An asymmetric membrane, osmotic, delivery device having coated macroparticulate solubility modifiers. The device comprises a beneficial agent, an osmagent, a coated macroparticulate solubility modifier and an asymmetric membrane that surrounds the device components. The device is useful for dispensing a beneficial agent to an aqueous environment of use. The coated macroparticles modify the solubility of the beneficial agent so that it's release can be controlled. The larger size of the solubility modifier macroparticles provides, for example, a longer release duration than would have been possible with a smaller size.
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